Hair dryer



FIG. 1 is a front perspective view of an ornamental design for a hair dryer according to the present invention;

FIG. 2 is a front elevational view of the hair dryer of FIG. 1;

FIG. 3 is a rear elevational view of the hair dryer of FIG. 1;

FIG. 4 is a left side elevational view of the hair dryer of FIG. 1;

FIG. 5 is a right side elevational view of the hair dryer of FIG. 1;

FIG. 6 is a top plan view of the hair dryer of FIG. 1; and,

FIG. 7 is a bottom plan view of the hair dryer of FIG. 1. 

CLAIM The ornamental design for a hair dryer, as shown and described. 